Obiectives Demonstrate our understanding of the concepts of mechanical energy, including kinetic and potential energy. Develop skills in using appropriate instruments to measure relevant variables such as mass, velocity, height, and time. Collect and analyze experimental data to understand the relationship between kinetic and potential energy. Collect data to create graphs, tables, and written explanations of the results. Evaluate the accuracy and precision of the experimental data, identify sources of error, and quantify the uncertainty in the measurements. By achieving these objectives, we hope to deepen our understanding of mechanical energy. Methods and theory Methods: To investigate the conservation of mechanical energy in a system, we conducted an experiment using the length of a flag and mass of the glider. The experiment consisted of the following steps: 'I. First, we measured the mass of the glider using a scale. 2. Next, we measured the height at which the glider was released using a meter. 3. We then timed the glider using it as it swung back, using a stopwatch. 4. Finally, we used the data collected to calculate the gravitational potential energy and kinetic energy of the glider at different points in its swing. We repeated the experiment 3 or 4 times, each time changing the weight at which the glider was released to investigate how the conservation of energy varies with the height. Theory: According to the law of conservation of mechanical energy, the total mechanical energy of a system is conserved if no W system. This